Most people, they do not understand what he is and what is the goal of life. They are called ajñānī, "in ignorance." Just like animal. Animal does not know what is the aim of life. Similarly, if a human being does not know what is the aim of life, he is also animal. So catur-vidhā bhajante māṁ sukṛtino 'rjuna, arthārthī jñānī, jijñāsur jñānī ca bharatarṣabha (BG 7.16).
So this is beginning of life. To try to understand, to approach God, that is the beginning of human civilized life. Therefore, in the Vedic civilization, there are four principles: dharma, artha, kāma, mokṣa. Dharma means religious principle, to understand. And economic development—because we require money, after all, to keep this body fit—that is also required. Dharma, artha, kāma. Kāma means sense gratification. Āhāra-nidrā-bhaya-maithunaṁ ca. To eat, to make arrangement for eating, to make arrangement for sleeping, to make arrangement for sense gratification and to make arrangement for defense—these are necessities of the body. These are called kāma. Dharma artha kāma mokṣa (SB 4.8.41, CC Ādi 1.90). And at last, to become liberated, mokṣa. Mokṣa means to get out of the entanglement of material miserable condition of life. That is called mokṣa. What is the material miserable condition of life? There are many. But the essence is, as presented by Kṛṣṇa, janma-mṛtyu-jarā-vyādhi-duḥkha-doṣānudarśanam (BG 13.9). Everyone is trying, struggling for existence, to get out of the miserable condition of life. Everyone is trying. The standard of miserable condition may be different. One has got a million dollar; he thinks, "This is miserable condition. I must have ten times of this money. Then I will be happy." And one has got one hundred million dollars. . . or one hundred dollars, he thinks that "If thousand dollars I get. . ." In this way, everyone is trying to approach a position where he will be happy.